Universal has announced Friday June 28, 2019 as the release date for Cowboy Ninja Viking, the feature adaptation of A.J. Lieberman and artist Riley Rossmo's Image graphic novel. Pratt has been attached to star in this for a while and he’ll be producing alongside Mark Gordon, Michael DeLuca and Diamond Cassidy. Pratt plays a guy who is a new kind of assassin who manifests the toughest skills of three different personas: Cowboy, Ninja and…